WO2008152832A1 - Liquid crystal display - Google Patents

Liquid crystal display Download PDF

Info

Publication number
WO2008152832A1
WO2008152832A1 PCT/JP2008/052401 JP2008052401W WO2008152832A1 WO 2008152832 A1 WO2008152832 A1 WO 2008152832A1 JP 2008052401 W JP2008052401 W JP 2008052401W WO 2008152832 A1 WO2008152832 A1 WO 2008152832A1
Authority
WO
WIPO (PCT)
Prior art keywords
correction
luminance level
liquid crystal
crystal display
color
Prior art date
Application number
PCT/JP2008/052401
Other languages
French (fr)
Japanese (ja)
Inventor
Takeshi Masuda
Tokihiko Shinomiya
Original Assignee
Sharp Kabushiki Kaisha
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Sharp Kabushiki Kaisha filed Critical Sharp Kabushiki Kaisha
Priority to CN2008800067184A priority Critical patent/CN101622657B/en
Priority to US12/449,529 priority patent/US20100013872A1/en
Publication of WO2008152832A1 publication Critical patent/WO2008152832A1/en

Links

Classifications

    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
    • G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
    • G09G3/34—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source
    • G09G3/3406—Control of illumination source
    • G09G3/3413—Details of control of colour illumination sources
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
    • G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
    • G09G3/34—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source
    • G09G3/36—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source using liquid crystals
    • G09G3/3611—Control of matrices with row and column drivers
    • G09G3/3648—Control of matrices with row and column drivers using an active matrix
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2320/00—Control of display operating conditions
    • G09G2320/02—Improving the quality of display appearance
    • G09G2320/0242—Compensation of deficiencies in the appearance of colours
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2320/00—Control of display operating conditions
    • G09G2320/02—Improving the quality of display appearance
    • G09G2320/0271—Adjustment of the gradation levels within the range of the gradation scale, e.g. by redistribution or clipping
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2320/00—Control of display operating conditions
    • G09G2320/06—Adjustment of display parameters
    • G09G2320/0626—Adjustment of display parameters for control of overall brightness
    • G09G2320/0646—Modulation of illumination source brightness and image signal correlated to each other
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2320/00—Control of display operating conditions
    • G09G2320/06—Adjustment of display parameters
    • G09G2320/0666—Adjustment of display parameters for control of colour parameters, e.g. colour temperature
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2360/00—Aspects of the architecture of display systems
    • G09G2360/16—Calculation or use of calculated indices related to luminance levels in display data
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
    • G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
    • G09G3/34—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source
    • G09G3/3406—Control of illumination source
    • G09G3/342—Control of illumination source using several illumination sources separately controlled corresponding to different display panel areas, e.g. along one dimension such as lines
    • G09G3/3426—Control of illumination source using several illumination sources separately controlled corresponding to different display panel areas, e.g. along one dimension such as lines the different display panel areas being distributed in two dimensions, e.g. matrix

Abstract

A liquid crystal display, specifically a transmission type liquid crystal display having a built-in backlight at the rear side of a panel. The liquid crystal display has a gradation signal generator section (100) including an input image luminance level analyzing circuit (120) for acquiring the luminance level distribution for each color based on the RGB image signals, a correction coefficient computing circuit (140) for calculating the correction coefficients based on the luminance level distribution for each color and an image signal correction circuit (160) for correcting the luminance levels of the RGB image signals based on the correction coefficients, and a backlight intensity control circuit (600) for adjusting the light-emitting amount of each color LED based on the correction coefficients. The correction coefficient computing circuit (140) calculates the correction coefficients such that correction of the luminance levels reduces the difference in the luminance level distribution among each of RGB colors. The backlight intensity control circuit (600) adjusts the light-emitting amount of each color to cancel variation in the luminance level and variation in the light-emitting amount.
PCT/JP2008/052401 2007-06-11 2008-02-14 Liquid crystal display WO2008152832A1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
CN2008800067184A CN101622657B (en) 2007-06-11 2008-02-14 Liquid crystal display
US12/449,529 US20100013872A1 (en) 2007-06-11 2008-02-14 Liquid crystal display device

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2007154201 2007-06-11
JP2007-154201 2007-06-11

Publications (1)

Publication Number Publication Date
WO2008152832A1 true WO2008152832A1 (en) 2008-12-18

Family

ID=40129445

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2008/052401 WO2008152832A1 (en) 2007-06-11 2008-02-14 Liquid crystal display

Country Status (3)

Country Link
US (1) US20100013872A1 (en)
CN (1) CN101622657B (en)
WO (1) WO2008152832A1 (en)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2010150299A1 (en) * 2009-06-22 2010-12-29 株式会社 東芝 Liquid crystal display device
EP2438588A2 (en) * 2009-06-03 2012-04-11 Manufacturing Resources International, INC. Dynamic dimming led backlight
US20120154459A1 (en) * 2009-09-30 2012-06-21 Sharp Kabushiki Kaisha Image display device and image display method
CN102752604A (en) * 2012-06-18 2012-10-24 深圳创维－Rgb电子有限公司 Image display method and intelligent device
US10126579B2 (en) 2013-03-14 2018-11-13 Manfuacturing Resources International, Inc. Rigid LCD assembly
US10768483B2 (en) 2015-09-01 2020-09-08 Manufacturing Resources International, Inc. Optical sheet tensioning device
US10921510B2 (en) 2013-12-02 2021-02-16 Manufacturing Resources International, Inc. Expandable light guide for backlight
US11474393B2 (en) 2014-10-08 2022-10-18 Manufacturing Resources International, Inc. Lighting assembly for electronic display and graphic

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BRPI0822306A2 (en) * 2008-02-14 2015-06-16 Sharp Kk Display device
US20120092242A1 (en) * 2009-03-27 2012-04-19 Koninklijke Philips Electronics N.V. Device for placement in front of a display device
TR201001102A2 (en) * 2010-02-12 2011-09-21 Vestel Elektroni̇k Sanayi̇ Ve Ti̇caret Anoni̇m Şi̇rketi̇@ Customize the LED backlit display @
US9123280B2 (en) * 2010-06-23 2015-09-01 Sharp Kabushiki Kaisha Image display device and image display method
EP3319073B1 (en) 2010-12-08 2020-08-05 Schott Ag Display
DE202010013087U1 (en) * 2010-12-08 2011-02-24 Schott Ag display
WO2013035635A1 (en) * 2011-09-07 2013-03-14 シャープ株式会社 Image display device and image display method
KR101888682B1 (en) * 2012-06-13 2018-08-16 삼성전자 주식회사 Display apparatus and control method thereof
WO2014191049A1 (en) * 2013-05-31 2014-12-04 Huawei Technologies Co., Ltd. Method for controllling the backlight of a lcd panel
JP6350980B2 (en) * 2013-10-09 2018-07-04 Ｔｉａｎｍａ Ｊａｐａｎ株式会社 Control circuit and display device including the control circuit
JP2015222400A (en) * 2014-05-23 2015-12-10 株式会社ジャパンディスプレイ Display device, display system and image processing circuit
CN104575405B (en) * 2015-02-04 2017-08-25 京东方科技集团股份有限公司 A kind of method, the display device of adjusting display device backlight illumination
US10863202B2 (en) * 2015-06-12 2020-12-08 Shaoher Pan Encoding data in a source image with watermark image codes
KR102654711B1 (en) * 2016-12-05 2024-04-05 삼성디스플레이 주식회사 Display apparatus and method of driving the same
JP2018180333A (en) * 2017-04-14 2018-11-15 株式会社ジャパンディスプレイ Display device and display module
CN109979401B (en) 2019-05-06 2021-01-08 京东方科技集团股份有限公司 Driving method, driving apparatus, display device, and computer readable medium
US20220269150A1 (en) * 2019-07-26 2022-08-25 Fuji Corporation Illuminating unit

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JP2004325629A (en) * 2003-04-23 2004-11-18 Seiko Epson Corp Display device and its dimming method
JP2005258403A (en) * 2004-02-09 2005-09-22 Hitachi Ltd Lighting unit, image display device having the same, and image display method
JP2006145836A (en) * 2004-11-19 2006-06-08 Alpine Electronics Inc Liquid crystal screen color tone correcting device

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Patent Citations (4)

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Publication number Priority date Publication date Assignee Title
JPH1165531A (en) * 1997-08-20 1999-03-09 Fujitsu Ltd Image display device and lsi for image display
JP2004325629A (en) * 2003-04-23 2004-11-18 Seiko Epson Corp Display device and its dimming method
JP2005258403A (en) * 2004-02-09 2005-09-22 Hitachi Ltd Lighting unit, image display device having the same, and image display method
JP2006145836A (en) * 2004-11-19 2006-06-08 Alpine Electronics Inc Liquid crystal screen color tone correcting device

Cited By (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10431166B2 (en) 2009-06-03 2019-10-01 Manufacturing Resources International, Inc. Dynamic dimming LED backlight
EP2438588A2 (en) * 2009-06-03 2012-04-11 Manufacturing Resources International, INC. Dynamic dimming led backlight
EP2438588A4 (en) * 2009-06-03 2013-01-16 Mri Inc Dynamic dimming led backlight
KR101796718B1 (en) 2009-06-03 2017-11-10 매뉴팩처링 리소시스 인터내셔널 인코포레이티드 Dynamic dimming led backlight
WO2010150299A1 (en) * 2009-06-22 2010-12-29 株式会社 東芝 Liquid crystal display device
US20120154459A1 (en) * 2009-09-30 2012-06-21 Sharp Kabushiki Kaisha Image display device and image display method
US8988338B2 (en) * 2009-09-30 2015-03-24 Sharp Kabushiki Kaisha Image display device having a plurality of image correction modes for a plurality of image areas and image display method
CN102752604A (en) * 2012-06-18 2012-10-24 深圳创维－Rgb电子有限公司 Image display method and intelligent device
US10126579B2 (en) 2013-03-14 2018-11-13 Manfuacturing Resources International, Inc. Rigid LCD assembly
US10831050B2 (en) 2013-03-14 2020-11-10 Manufacturing Resources International, Inc. Rigid LCD assembly
US10921510B2 (en) 2013-12-02 2021-02-16 Manufacturing Resources International, Inc. Expandable light guide for backlight
US11474393B2 (en) 2014-10-08 2022-10-18 Manufacturing Resources International, Inc. Lighting assembly for electronic display and graphic
US10768483B2 (en) 2015-09-01 2020-09-08 Manufacturing Resources International, Inc. Optical sheet tensioning device
US11275269B2 (en) 2015-09-01 2022-03-15 Manufacturing Resources International, Inc. Optical sheet tensioning device
US11656498B2 (en) 2015-09-01 2023-05-23 Manufacturing Resources International, Inc. Optical sheet tensioning device

Also Published As

Publication number Publication date
US20100013872A1 (en) 2010-01-21
CN101622657B (en) 2012-05-09
CN101622657A (en) 2010-01-06

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